Diki,

Probably for you (or I) Audio Backing Tracks may not make much sense, but, for some performers, including several here on SZ, audio tracks are preferred or, at least, included in their show.

Reasons will vary among those who use them, and there are probably more motives of which I am not aware.

For instance, Yamaha's SA/SA2/Mega Voices and Korg's DNC still do not provide custom Vocal tracks (not just harmonies) for those wanting an exact duplicate of a particular song background...plus, Audio Backing Track playback is no longer limited by an inability to transpose and/or change tempo without affecting the outcome.

Would I use Audio Backing Tracks? No, I don't think I would, but again, there are a number of performers/players on SZ who do...perhaps they can elaborate on the reasons why they use them as opposed to SMF?

If anyone would know, it would be them.

Ian